OPB800W55 Equivalent & Substitute Parts

Part Overview

The OPB800W55 is an optical sensor through-beam phototransistor module manufactured by TT Electronics/Optek Technology. This component features a 0.375" (9.53mm) sensing distance with pre-wired chassis mount packaging and unamplified phototransistor output configuration. The OPB800W55 is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. Active equivalent models from the same manufacturer provide identical electrical and mechanical parameters with current product availability and improved compliance status.

Key Parameters

Parameter	Value
Sensing Distance	0.375" (9.53mm)
Sensing Method	Through-Beam
Output Configuration	Phototransistor
Current - DC Forward (If) (Max)	50 mA
Current - Collector (Ic) (Max)	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V
Operating Temperature Range	-40°C ~ 80°C
Mounting Type	Chassis Mount
Package / Case	Module, Pre-Wired
Type	Unamplified
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB800W55 are determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish substitution validity:

Sensing distance: 0.375" (9.53mm)
Sensing method: Through-Beam
Output configuration: Phototransistor
Maximum forward current: 50 mA
Maximum collector current: 30 mA
Collector-emitter breakdown voltage: 30 V
Operating temperature range: -40°C ~ 80°C
Mounting type: Chassis Mount
Package configuration: Module, Pre-Wired
Amplification type: Unamplified

All substitute parts listed maintain identical values across these parameters. Differences in product status, RoHS compliance, and packaging format (bulk vs. other configurations) do not affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Output Configuration	If (Max)	Ic (Max)	VCE Breakdown (Max)	Operating Temp	Mounting Type	RoHS Status	Inventory
OPB800W55	TT Electronics/Optek Technology	Obsolete	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	RoHS non-compliant	1077 Pcs
OPB800W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1842 Pcs
OPB800W51Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	12796 Pcs
OPB801W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	3801 Pcs
OPB802W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1230 Pcs
OPB810W51Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1570 Pcs
OPB810W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1905 Pcs
OPB811W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	7163 Pcs
OPB812W55Z	TT Electronics/Optek Technology	Active	0.375" (9.53mm)	Phototransistor	50 mA	30 mA	30 V	-40°C ~ 80°C	Chassis Mount	ROHS3 Compliant	1797 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the OPB800W55. Selection between equivalent models should be based on the following factors:

Product Status: The OPB800W55 is obsolete. All substitute parts listed carry active product status, ensuring long-term availability and manufacturer support.

Compliance: The OPB800W55 is RoHS non-compliant. All substitute parts are ROHS3 compliant, meeting current regulatory requirements for new designs and procurement in regulated industries.

Inventory Availability: OPB800W51Z offers the highest inventory level at 12,796 pieces, followed by OPB811W55Z at 7,163 pieces. OPB800W55Z provides the closest direct equivalent with 1,842 pieces in stock.

Packaging: All substitute parts are supplied in bulk packaging format, consistent with the pre-wired module configuration of the original part.

Frequently Asked Questions (FAQ)

Q: Can OPB800W55 be directly replaced with OPB800W55Z?

A: Yes. OPB800W55Z is the direct equivalent of OPB800W55, maintaining identical electrical and mechanical parameters. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). OPB800W55Z is supplied in bulk packaging.

Q: What is the difference between OPB800W51Z and OPB800W55Z?

A: Both parts are parametrically equivalent with identical electrical specifications and operating characteristics. The designation difference (W51 vs. W55) reflects internal design variations that do not affect functional performance or compatibility. Both are active products with ROHS3 compliance.

Q: Are all substitute parts pin-compatible with the OPB800W55?

A: All substitute parts share identical mounting type (chassis mount), package configuration (module, pre-wired), and electrical parameters. Physical compatibility is maintained across all listed equivalents.

Q: Which substitute part should be selected for new designs?

A: OPB800W55Z or OPB800W51Z are recommended for new designs. Both are active products with ROHS3 compliance and high inventory availability. OPB800W51Z offers superior stock levels for volume production.

Q: Does the base product number (OPB800, OPB801, OPB810, OPB811, OPB812) affect compatibility?

A: No. Base product number variations do not affect electrical or mechanical compatibility. All listed parts maintain identical sensing distance, output configuration, current ratings, voltage ratings, operating temperature range, and mounting specifications.

Q: Are there any temperature or environmental limitations that differ between substitute parts?

A: No. All substitute parts operate across the identical temperature range of -40°C to 80°C with MSL rating of 1 (unlimited moisture sensitivity level). Environmental specifications are uniform across all equivalents.

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